nine ball hojtryksventil hi capaNine Ball (Laylax) has made a really smart NEO R high pressure valve. This valve gives your gun magazine better muzzle velocity and more consistent shots. It comes fully open as standard because the valve here can be adjusted so that you can have it fully open, half open and almost closed When it is almost closed you get a lower exit velocity and use less gas per shot. This fits in the following: TM Hi Capa 5. 1 TM M4A1 MWS TM TYPE89 TM M1911A1 TM MEU